Draw-bar and yoke connection.



I. HARRIS. DRAW BAR AND YOKE CONNECTION. APPucATloN FILED AuG.20.1911.

1,286,611 Patented. Dec. 3, 1918.

lWITNESSES ...me/1h Harr MW a# y.

ATTO Y x E xmas inns mmmmumm umn-:wanna JosrII HARRIs,oFcHIcAso, ILLINOIS, vAfssIsNoIg,'fro'WILLIAM 1I. MINEn, or

YCIIAZY, 'NEW YORK.

v, DRAW-BAR vANI)l YQKE coivivnc'rIon' Thisinvention -relatesto improvements in draw bar-and yoke connections.

'One object ofthe invention is to providea detachable draw bar and yoke connection Y for railway-draft riggings'r which is applicable to yoke straps of 'the riveted type and all'standard types ofdraw bars regardless of the presence or absence of coupler-kcy slotsvth'erein. -1 .y Another `andfmore yspeciii'cfobject of the invention is to providefadetachable 'connec-y tion ofthe' typeabove specified 'so` arranged l that the -means ,which directly connect' the yoke strap andi-draw .barl are `placed under double shear `to thereby increasefthe `strength of the" detachable connection and -to further arrange'the connection so thatjthe dra-w bar disturbing the' fdraftgean can" bedisconnectedfrom the :yoke without In' the drawing forminga part-of this specication,Figure lisa part vertical section, part side elevation of a draw barand yoke showing my improvements in connecf tiontherewith 'F.ig. 2"is a horizontal, sectionalvview, taken'on the line 2-2 of Fig; 1.1" Fig. 3" isa vertical, sectional view, taken onthe'line of Fig.' 1'.r lFig.` 4 is a detail perspective 'view lofthe detachable locking block employed with "my construction.

-And Fig. 5' is avviewfsimilar to Fig. 1, but

illustrating;awdifferentl embodiment of the inventioIL" lnsaidldrawing, referring to the con.

struction illustrated in Figs. 1 to 4, A designates a standard draw bar; B a U-shaped yoke of the rivet type C a hollow cast hood or head; Da locking blockgand E a retain-` ing key for the block D.` The drawiba'r' A, being ofthe standard type, is providedfwith thefusual upper'and. lower shoulders 10 and 1l and'upper and lower sets: of rivet'A receiving holes 12 and 13. .'-The strap B is. of the' usual U-shape having-:upper and lower arms -14- and 15, rear `Specificatienfof Letters Patent. Application slee mgust 2.o, 1917.- Lserial Noblsaaos.

ratenteanec; s, 191s.

connecting piece *16,y filler block 17, and the usual standardly spaced rivet receiving holes 18.-.181in the upper arm and .correspondin :The headCis preferably inthe form lof ak casting,and'has upper wall 20, parallel kside walls 21-21," Alower cross connecting portions 22 and 23and an upper transverse gib Y 24 adapted to engage the upper shoulder 10 of :the draw bar. nits inner face, the upper wall 20 of the head C is Jprovided with a pair of depending lugs 25-25 adapted'to extend through the' rivet receiving holes 18 andqinto the vholes 12. The length of the lugs 25 is such that the bottom ends thereof donotextend below the lower face of the gib 24,the reason for` which will appear hereinafter.v Y f, l f Thefblock Dis of substantially right angular formation having a lower wall 26 and upstanding wall 'or shoulder v27, the ylatter being adapted to engage the lowerishoulder l1 of the draw bar.:` The `block D is insertible and removable through an'opening inthe lower part'of the hood C and when in position, is adapted to have'the shoulder 27 .thereof"engage` at itslside edges against side fabutments 28-28 formed .on the inner faces of the side walls 21. The blockV D. isrprovided on its upper face with a pair of lugs 29-2'9 adapted to'penetratethe frivet receiving yholes 19,` and the holes 13 Vin the draw bar. vThe 'block D is held in its opera` tive position. by the key E, therlatter lbeing supportedkon top of the cross pieces 22 and 23 and having a depending front portion' 30 throughrwhich is extended a bolt 3l for retainingit in place.

The distance between the lower face of the gibk24 and the upper surfaces ofthe cross f'pieces 22 and 23. is made "slightly v greater than the height of the draw `bar butt plus the thickness of the rlower'arm of the yoke Bwjniassembling the parts, the hood Czi's'placed over the ends .of the yoke strap *andthe llugs 2,5` inserted through the holes 18 ofthe upper vyoke arm. Thebuttof the draw bar A is then inserted longitudinally' i within the headC and below the :gib 24 and during'this movement, the lower arm 15 of the yoke strap is' depressed Vagainst thejup-v per face ofthe cross wallv23. The drawbar having been inserted' sufliciently,it is then elevated, thusy causing the lugs 25 to enter the upperfholes 12. The flower varm-of kthe yoke strap vwill its o'Wn accord and then the block D maybe inserted toithe positionshovvn in-the drawing and held bythe key E.

Due to the fact that the y hood Candblock D each have shoulderedfen'gagementWith the dravv bar, .it is. obvious that the Ylugs 125 and 29' are placed under double 'sli'ear'thus providing a very strong Aconnectionbetween the draw bar and yoke strap. With the arrangement'shovvn it is also :possible-J for 1 old yoke straps k,of the rivetedf typeto be remf ployed without yinodication other f than the shearinglo offa smallisection .offt'he strap Aat theitrontendst ofvthe f arms Ythereon thus e'ecting r,a Alarge saving orftheirlraijlroads and atuthesametime giving a. detachable'- onnection :between :the yokefand the.; dra-W 21.1.'. ,':ul fg:

-, In the I construction iillustratedtinlk Eig, '.155 the `.yoke .strap B" .andthe i draw bar A 'are the same as :shown in the .other lfigures.- hood jC. at the toplthereof ,is provided with a gibylQl the, same as vin .-theeothe'r construcfl provided with a' substantially-lsoliditransverseI :Wall LO spaced I belQWA-theigib l 124VV a distance greater than the height of-thepdrawv .bar butt plus the thickness of the .ilov'ver arm.

of ,the yoke strap. VThe block .D is the-same as "the block D yexcept that itiis made .someL What jthicker `and has-.fia transverse recessl 4l therein through which'` isadapted to. eX- tend akey425athe latterl.beinginsertedv laterally through suitablev perforaions Y 43 l-in .the lside fwalls '1210i the hoodlCul" .The'block l D is-of right angular ormation'and has the front shoulder .-127 '.th'ereof: adapted-*tonengage the lowerv shoulder of the draw;w bar butt, saidblock VD. being insertiblerfromrthe front end of the-hood :insteadof through'. the

bottom. '.*The block D :is held-in position after it lis inserted Ilby a transverse'v key, 142 Which 'passes r through a. suitable opening'-i'n said 'block and suitable openings 143 ,inythe side-Walls 121'fof1th'e hood CTocon'nect the yokefstrap vB With: the hood; yblookvand draw bar, I employ a pairgoffeverticalbolts 44k Which `extendvthrough 'suitablealined Eper-y forations in the upper Wall of thehogd C,

the block D7 andthe lower vvallofffthe hood .Vith.,theconstruction-just--describedg tis4 obvious that. the ibolts .44 fare :y placed under double sheaizboth at the- 'top' andbottom the same as fthe integral lugs or.thestuds"illus-y tratedxinthe other` figures.v e f `latnpw. l ,Ls In la' device of the character described,

bmfrsfld `lViCGS including a hood,V a lock-A ing"blo'ck;"the"hood` and locking block hav- [ingneach transverse shoulders to engage the` shoulders of the draw bar,l and fm'ean'spene-U vtrailing .the holessofithe yoke strap and those f of the draW bar, saidmeans being longitudinally immovable.aerith-respecttoisaidhood and! block, 4wherebysaidy ilmeansareyunder double; shear withxrespeetito Leaeh'yoke arm.'

the. combination withsa A-yoke y. strap and a shouldered; idrawfbar; provided `with stand-v ardly,` disposed rivetl1oles;jof Va :hoodfhavythe combination' vvith'a` yokestrap and-a shouldered draw bar provided With stand-. v-ardl'y disposed"fr-ivet' holes'; Joit' -dev-ices f for -Iifde'ta'chably Aconnecting the strap and drawT i ing ajEtran'sme.rse1 upper shoulder adapted' to engagezthefnpperishoulder o ffthe drawbar and the rlower Wall .of which isg s p acedbelovv said ygib a distance equal to atleast the height .of -thegdraw bar gplusthe fthickness of one arm of .the yokewrstrlap; a slmulder'ed looking block. insertible beneathjtheydlaw bar butt t and thaving shoulderedferlgagernent therewith g' Vand' means -1penetrating-thef rivet holes Aof the yoke strap rand adrawvggbang said'v meansy f having? engagement` with :the hQQd and'blockroutside of` the yoke farms. I Y

'3. In a device ofthe characterfdeseribed,

the combinationmith sagyokevstrapaand a y shouldered drawibarprovided with stands ardly disposed. rivet .holes, of-a hood Within which rt-hefdraw ,bar `bu'ttfsis, received; of I fablock insertible Within :theghood fnf 1eans.-or engaging thehood-andfbl0k Wththe dn-.avt b-aizso that .thesame are pulledfforwardly with the draw sbarj; and;..m@ans .penetrating pulled forwardly by-the. hood-fand block at pointsoutsidepf; thefyoke strap and'byjthe l dIaWl bar butt at points inside of the .yoke strap.l i r Y the; combination v vith Aa @yoke strap and 5a .shouldered.' iilrrawiv bar provided with standafrdfly disposed rvetholes odeyices for de# tachably f connecting thestrap rand1 dravv bar, d

saiddevieesiincluding a hood, aglockingblock, the` Lhood and locking .-block :having leach transverselshoul'der-s toengagef-,the shoulders of @the draw bar,l 1andu fneans gfpenetlting gthe holes of the yoke strap and those-rof-ithe .draw lbarn said .means being longitudinally immovable -Withrespectftogsaid hood land block whereby said means areunderdouble sheanvvith respect 'to leach. Ayoke arm, ksaid means being formed, 'integrally with n,the

hood and block.

j ln-a drawbar and yokeconnecti'on,"

combination with a shouldered draw bar:` and ,yoke .strap having standard ly vspaced Brivet receiving :holesv therein.;- }ofa hollow l'hood Within Vwhich is; adapted to sbe receiyed "the dravv barlbutt, said hood havingvfanfallppl ranged to extend through the rivet holes of 1,286,611 v i i l3A .transverse gib, and lugs arranged to extend -the lower arm lof the -yoke and into the through the holes ofthe upper yoke arm and!l into the upper holes of the draw bar butt; ofa means for holding the looking 4block in oplocking block insertible vertically through erative position. y 5 the bottom of the hood, said block having a In Witness that I claim the foregoing I front shoulder engaging the front shoulder have hereunto subscribed my namethis 4c of the dravvvbar, said block having lugs arday of Aug. 1917.

v JOSEPH HARRIS.

` G'opies'of thispate'nt may beobtavined for ive cents each, by addressing the Commissioner of Patents,

Washington, D. C.

lower vrivet vholes of the draw bar butt; and 1G l 

